13315342521 has 16 divisors (see below), whose sum is σ = 19232608640. Its totient is φ = 8194052880.

The previous prime is 13315342499. The next prime is 13315342529. The reversal of 13315342521 is 12524351331.

It is not a de Polignac number, because 13315342521 - 2⁷ = 13315342393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13315342529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1003525 + ... + 1016706.

It is an arithmetic number, because the mean of its divisors is an integer number (1202038040).

Almost surely, 2^13315342521 is an apocalyptic number.

It is an amenable number.

13315342521 is a deficient number, since it is larger than the sum of its proper divisors (5917266119).

13315342521 is an equidigital number, since it uses as much as digits as its factorization.

13315342521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020273 (or 2020247 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

Adding to 13315342521 its reverse (12524351331), we get a palindrome (25839693852).

The spelling of 13315342521 in words is "thirteen billion, three hundred fifteen million, three hundred forty-two thousand, five hundred twenty-one".